Made by the Reynolds Aluminum Co, the Aluminaut was an experimental deep sea exploration submarine built in 1964. The Aluminaut is credited with rescuing the DSV Alvin-2 in 1969 after it sank, and helping to locate an atomic bomb lost off the coast of Palomares, Spain in 1966. Also featured in the film is footage of the NR-1, the Navy's nuclear powered research submarine, the bathyscaphe Trieste and Trieste II, and other vessels including the Perry Cubmarine. The film also includes footage of the Ben Franklin, a research vessel built by Jaccques Piccard which drifted in the Gulf Stream in 1969.
